Input validation

Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confidentiality...

Input validation

Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure...

Out-of-bounds

Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table RMP memory, potentially resulting in a loss of SNP Secure Nested Paging memory integrity...

CVE-2021-46768

Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service...

CVE-2021-46768

Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service...

CVE-2021-46768

Summary (CVE-2021-46768) : The issue is insufficient input validation in AMD SEV firmware affecting the ASP boot loader, allowing out-of-bounds memory reads and potentially causing a denial of service. Documents consistently describe this as a vulnerability in SEV firmware with the ASP boot loade...

CVE-2021-26409

CVE-2021-26409 affects AMD SEV-ES, where insufficient bounds checking can corrupt the Reverse Map (RMP) memory, potentially compromising SNP memory integrity. Public references identify AMD SEV-ES-related memory integrity risk; mitigation guidance is distributed via AMD’s PSU/AGS updates (AMD-SB-...

CVE-2021-26409

Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table RMP memory, potentially resulting in a loss of SNP Secure Nested Paging memory integrity...

CVE-2021-26409

Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table RMP memory, potentially resulting in a loss of SNP Secure Nested Paging memory integrity...

CVE-2021-26404

Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure...

CVE-2021-26404

Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure...

CVE-2021-26404

CVE-2021-26404 affects AMD SEV firmware; root cause is improper input validation and bounds checking that may leak scratch buffer bytes, potentially leading to information disclosure. Documents indicate mitigations via AMD’s BIOS updates (AMD-SB-1032) with platform-specific versions (e.g., MilanP...

CVE-2021-26403

Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confidentiality...

CVE-2021-26403

Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confidentiality...

CVE-2021-26403

CVE-2021-26403 corresponds to an AMD SEV vulnerability: insufficient checks in SEV could allow a malicious hypervisor to disclose the launch secret, risking VM confidentiality. Documented impact: local attacker with low privileges could compromise confidentiality; exploit details are not provided...

CVE-2021-26402

Insufficient bounds checking in ASP AMD Secure Processor firmware while handling BIOS mailbox commands, may allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions which may lead to a potential loss of integrity and availability...

CVE-2021-26402

CVE-2021-26402 describes insufficient bounds checking in the AMD Secure Processor (ASP) firmware during BIOS mailbox handling, enabling an attacker to write partially controlled data out-of-bounds into SMM or SEV-ES regions and potentially compromise integrity and availability. The issue is discu...

AMD Server Vulnerabilities – January 2023

Bulletin ID: AMD-SB-1032 Potential Impact: Varies by CVE, see descriptions below Severity: Varies by CVE, see descriptions below Summary During security reviews in collaboration with Google, Microsoft, and Oracle, potential vulnerabilities in the AMD Secure Processor ASP, AMD System Management Un...

Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-5792-2)

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5792-2 advisory. Mingwei Zhang discovered that the KVM implementation for AMD processors in the Linux kernel did not properly handle cache coherency with Secu...

USN-5792-2: Linux kernel vulnerabilities

Mingwei Zhang discovered that the KVM implementation for AMD processors in the Linux kernel did not properly handle cache coherency with Secure Encrypted Virtualization SEV. A local attacker could possibly use this to cause a denial of service host system crash. CVE-2022-0171 It was discovered th...